Telephone-exchange system



27 Sheets-Sheet 1 S. B. WILLIAMS, JR

TELEPHONE EXCHANGE SYSTEM F-led March 27 Aug. 28, 1923.

| lLL Aug. 2s, 1923.

11,466,155 S. B. WILLIAMS, JR

TELEPHONE EXCHANGE SYSTEM Filed March 27. 1919 27 Sheets-Sheet 2 +V .hw w QIM, m .A n h M ffm 4, n ,mW H e Q,nU hm w. 99N W5. /w M a R mm 9 M J, m N a W E m mv. N. Cu y ,M m w w L H L m m w w m. B m w 5S s. m m w s MSH 3 2 9 nl 8, 2 uw u A mams@ 1919 27 Sheets-Sheet 4 S. B. WILLIAMS, JR

TELEPHONE EXCHANGE SYSTEM Filed March 27.

a/m/e/ 5. W/Y//ams JK Aug. 28, i923.

Aug. 28, E923. 1,46155 s. B. WILLIAMS, JR

TELEPHONE EXCHANGE SYS TEM Filed March .27. 1919 27 Sheets-Sheet 5 HASESS Aug. 28, E923.

S. B. WILLIAMS, JR

TELEPHONE EXCHANGE SYSTEM Filed March 27, 1919 27 Sheets-Sheet 6 .MEQ @E BWM www! /H Ven/0K' Sama/e/ 5. M//Y//byms J?.

Aug. 28, H923.

S. B. VVLLIAMS, JR

TELEPHONE EXCHANGE SYSTEM Filed March 27; 1919 2'7 Sheets-Sheet 8 III'IIIIIIIIII S. B. WILLIAMS, JR

TELEPHONE EXCHANGE SYSTEM Filed March 27, 1919 27 Sheets-Sheet 9 R. E S .w k wm ww@ S .MQ

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TELEPHONE EXCHANGE S YS TEM Filed March 27 1919 2'7 Sheets-Sheet 10 /H I/e/f for' Aug. 28, 1923. Mauss S. B. WILLIAMS, JR

TELEPHONE EXCHANGE SYSTEM Filed March 27, 1919 27 Sheets-Sheet 11 CAM STA RT INTERVALS END :g'ggg |5AF1ERL|NE0F Paal. cLosEDS" OPEN |o L|NE Pos. 185 :05%35, 72g; |`oAFTERL1NE0F P05. l. CLOSED 5 OPEN 0 L|NE PosJB :gglgrgi L|NE P052. cLosEp5 OPEN lo LINE Pos, I9

ToL/MSLAMP Aug. 28, 1923.

S. B. WILLIAMS, JR

TELEPHONE EXCHANGE SYSTEM Filed March 27, 1919 27 sheets-sheet 15 Aug. 28, 1923.

S. B. WILLIAMS, JR

TELEPHONE EXCHANGE SYSTEM Filed March 27, 1919 27 Sheets-Sheetl 16 7 5 1 5 .H m, m S 6 r A. .m l e h s 7 2 m Rww .,ww S Mwv. AMZ H um@ Wi WM d Eme .Pl Ei SLF E T Aug. 2s, 1923.

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TELEPHONE EXCHANGE SYSTEM Filed March 27.. 1919 27 sheets-sheet 19 ton l5 //1 l/e/v far.'

EAMSS Aug. 28, 1923.

S. B. WILLIAMS, JR.

TELEPHONE EXCHANGE SYSTEM Filed March 27, 1919 27 Sheets-Sheet 20 

